In this review, we will be comparing Q750 and R-620F, two Passive Floor-standing speakers from KEF and Klipsch. Let's have a brief look at the main features
of KEF Q750 and Klipsch R-620F first before getting into our more
detailed comparison.
What size room are the KEF Q750 and Klipsch R-620F speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
In the following sections, we will get into more detail in order to better understand how the KEF Q750 and Klipsch R-620F compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both Q750 and R-620F are 2-way speakers.
Driver |
KEF Q750 |
Klipsch R-620F |
Driver Setup
|
2-way
|
2-way
|
Tweeter
|
1-inch
|
1.0-inch
|
Midrange
|
- |
- |
Woofer
|
2 x 6.5-inch
|
2 x 6.5-inch
|
Q750 features a 1" vented aluminum Dome Tweeter and 2 x 6.5" Aluminum Woofer with a Crossover frequency at 2500Hz. On the other hand, the R-620F features a 1.0" Tweeter and 2 x 6.5" Copper-spun IMG Woofer with a Crossover frequency at 2000Hz.
Frequency Response
Q750 has a frequency range of 48-28k Hz whereas R-620F has a frequency range of 38-21k Hz. With a minimum frequency of 38Hz, the R-620F can go significantly deeper on the low side and provide stronger bass compared to the Q750's min frequency of 48Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Q750 and R-620F have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Q750 sensitivity is rated at 88 dB and the R-620F's is at 96 dB. This 8 dB difference makes the Klipsch R-620F a more sensitive speaker compared to KEF Q750, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
Q750 can handle a max power of 150 watts RMS from the amp the whereas R-620F has a max power handling value of 100 watts RMS, 50 watts less than the Q750.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Q750 features Post type posts and R-620F has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Q750 has a front firing port whereas R-620F has a rear firing ports. KEF Q750's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Klipsch R-620F with its rear-firing port.
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare KEF Q750's and Klipsch R-620F's external dimensions. KEF Q750 has external dimensions of 945.0 x 328.0 x 315.0mm ( 37-3/16 x 12-7/8 x 12-3/8inch) whereas Klipsch R-620F has external dimensions of 1021.0 x 239.0 x 369.0mm ( 40-3/16 x 9-3/8 x 14-1/2inch) .
KEF Q750 is 76mm shorter and 54mm less deeper than Klipsch R-620F but it is also 89mm wider.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the KEF Q750 is approximately 1033.2cm2 / 160.1inch2 and base area of the Klipsch R-620F is approximately 881.9cm2 / 136.7inch2. The Q750 requires 17% more surface area than the R-620F which gives it a small disadvantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The KEF Q750 weighs 16.59kg / 36.5lbs and the Klipsch R-620F weighs 18.64kg / 41lbs. This makes the R-620F 12% heavier than the Q750.
Here is a comparison of how Q750 and R-620F's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of KEF Q750?
Here are the items that are included inside the box of Q750:
Floorstanding loudspeaker2 Outrigger feet4 Spikes6 Screws6 Washers4 Rubber insertsHex-keyOwners ManualWarranty Information
What's in the Box of Klipsch R-620F?
Here are the items that come with the R-620F:
Floorstanding loudspeaker Grille (installed) 2 Feet 4 Screws Quick Setup Guide Important Safety Instructions Warranty Information Loudspeaker Feet note
Max Input Power |
150 watts
vs
100 watts
|
Handle more power from your amplifier |
High Frequency Response |
28k Hz
vs
21k Hz
|
Generates higher frequency |
Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
Passive Radiator |
2 x 6.25-inch
vs
None
|
Increases the bass performance |
Dolby Atmos Drivers |
Optional
vs
No
|
Dolby Atmos Compatibility |
Height |
945mm
vs
1021mm
|
Easier to fit in smaller spaces |
Sensitivity |
96 dB
vs
88 dB
|
Play louder with same amount of amplification power |
Low Frequency Response |
38 Hz
vs
48 Hz
|
Generates deeper bass |
Base Surface Area |
881cm2 (239x369mm)
vs
1033cm2 (328x315mm)
|
Takes less floor space |
Price per pair* |
998USD
vs
1800USD
|
costs less (*prices may change depending on the seller, location and time) |
General |
KEF Q750 |
Klipsch Reference R-620F |
Brand |
KEF |
Klipsch |
Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
Power Range |
15-150 watts |
up to 100 watts |
Sensitivity |
88 dB |
96 dB |
Impedance |
8 ohms |
8 ohms |
Impedance |
3.8 ohms |
n/a |
Frequency Response |
48-28k Hz |
38-21k Hz |
Drivers |
|
|
Woofer Quantity |
2 |
2 |
Woofer Size |
6.5" |
6.5" |
Woofer Composition |
Aluminum |
Copper-spun IMG |
Woofer Surround Material |
Rubber |
Rubber |
Tweeter Size |
1" |
1.0" |
Tweeter Type |
Dome |
n/a |
Aimable Tweeter |
No |
No |
Midrange Driver |
No |
No |
Crossover Frequency |
2500Hz |
2000Hz |
Firing Direction |
front |
rear |
Physical Specs |
|
|
Height |
945.0mm (37.2") |
1021.0mm (40.2") |
Width |
328.0mm (12.9") |
239.0mm (9.4") |
Depth |
315.0mm (12.4") |
369.0mm (14.5") |
Weight |
16.59kg (36.5lbs) |
18.64kg (41lbs) |
Enclosure |
Passive Radiator |
Bass Reflex |
Finish |
MDF/Wood-grain vinyl |
MDF/Wood-grain vinyl |
Available Colors |
Walnut |
Black |
Grille |
n/a |
Yes |
Moisture Resistancy |
No |
No |
Connections |
|
|
Biamp Inputs |
No |
No |
Other |
|
|
Parts Warranty |
5 Years |
5 Years |
Labor Warranty |
5 Years |
5 Years |